There are two types of Magnetron that pulse Magnetron and continuous wave Magnetron. Pulse magnetron is mainly used in radar and continuous magnetron is used in each kind of heater and microwave medical instrument as well as Microwave oven. As the use of microwave in industry, the interest for continuous wave Magnetron becomes increase, and its application is to be various more and more.
Magnetron is structured with combining electric field and magnetic field, and generates 2.4GHz of microwave by spinning the electron under vacuum. Microwave oven, currently used in home, is separated to tungsten filament for emitting microwave (containing thorium) and cathode supporter which supporting this filament. Since filament and cathode supporter are operated in high temperature, it is used that the high purity Mo (Molybdenum) with high m.p under the vacuum condition. Though it may be a little changed the dimension and material by Magnetron manufacturer, but it commonly separated as follows.
They support the high frequency emitting filament in both sides of up and down that the Upper End Shield and Lower End Shield. Refer to the below homepage to see more detailed properties, dimension, and materials of Magnetron.
